this post was submitted on 09 Apr 2026
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Suggestions for migrating from Windows Server to Proxmox (startrek.website)
submitted 17 hours ago* (last edited 17 hours ago) by USSEthernet@startrek.website to c/selfhosted@lemmy.world
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I was wondering if I could get some suggestions from the community about the best way to go about migrating from Windows Server on my homelab host to Proxmox.

Background: Currently running Server 2022 Datacenter on my host because that's what I was familiar with. Using Hyper-V to manage multiple VMs like HomeAssistant and TrueNAS among other things. I have multiple container apps running within TrueNAS. There's an HBA passed through Hyper-V to the TrueNAS VM that has all of my HDDs connected to it. I'm just looking to migrate away from anything Microsoft/Windows.

Way Forward: The only procedure that I could come up with in my head was moving everything off of the NAS to my personal PC if I have the space, or maybe multiple PCs in the house. Back up all of my configs. Install Proxmox on the host, build out the VMs again, then restore the configs and just hope everything works the same. Or, just backup my configs build the new VMs on proxmox, restore and hope the new TrueNAS VM sees the data on the HDDs? I don't know if that would work.

If someone has a better idea, I'd like to hear it. Is there any way to dual boot Proxmox on the host maybe and slowly migrate things 1 by 1? Can you convert the VMs from Hyper-V before I install Proxmox?

Thanks everyone!

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[–] hendrik@palaver.p3x.de 20 points 17 hours ago* (last edited 17 hours ago) (1 children)

Can't you somehow convert the virtual harddisks of your VMs from vhd or whatever it is to qcow2 and start them on the new hypervisor? I mean that's pretty much the abstraction, virtualization is made for. I've never done it for Windows, though. I believe the "qemu-img" package has tools to convert disk images. It'll obviously need quite some temporary storage. And the VM configs / networking to be recreated on Proxmox.